my snowflake is really sick, i think hes a goner. He ate two days ago and seemed fine. This morning he was swimming around poorly, like totally uncoordinated, then he lay on his side. He is still like that this afternoon and starting to look grey, his gills are still moving otherwise he looks dead. i did a full water change 1 week ago ( moved house) and did some tests just now everything is fine and at normal levels. Is there anything thaT WOULD HELP HIM, i was thinking maybe a freshwater dip, or something, but somehow i dont think he will make it. I have had him since last christmas.